Dental neuralgia, medically known as pulpitis, can be further divided into chronic pulpitis and acute pulpitis. Chronic pulpitis generally does not occur with severe spontaneous pain, while the clinical manifestations of acute pulpitis are mainly severe pain, which can generally be judged by clinical manifestations combined with clinical examination because of its typical clinical features. The main symptom of acute pulpitis is severe pain, spontaneous paroxysmal attacks or paroxysmal aggravation; 2. pain at night, patients often have difficulty sleeping because of toothache; 3. temperature stimulation will intensify pain, eating hot and cold food can stimulate pain or pain more aggravated, often afraid to brush teeth with cool water; 4. when the pain attack, most patients can not clearly point out where the affected tooth, pain The pain often radiates to the upper and lower jaw teeth or head and face on the same side of the affected tooth; 5. Treatment of dental neuralgia 1. Seek medical attention as soon as possible when toothache symptoms appear. 2, root canal treatment: open the pulp chamber under local anesthesia, remove the infected pulp, prepare the root canal, and finally fill the tooth, which can fundamentally eliminate the tooth nerve pain. 3.(Pile) crown restoration: After root canal treatment, teeth with large defect of tooth tissue need to be restored with (pile) crown in most cases to protect tooth tissue and restore chewing function.